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Investigation of New Lead- free (1-x)BaTiO3-xBi(Mg1/2Zr1/2)O3 Solid Solution with Morphotropic Phase Boundary (1311.3788v1)

Published 15 Nov 2013 in cond-mat.mtrl-sci

Abstract: We report here the structure and dielectric studies on a new lead free (1-x)BaTiO3-xBi(Mg1/2Zr1/2)O3 solid solution to explore the morphotropic phase boundary. The powder x-ray diffraction studies on (1-x)BaTiO3-xBi(Mg1/2Zr1/2)O3 solid solution suggests that structure is tetragonal (P4mm) for the composition with x=0.05 and cubic for the composition with x=0.30 and 0.40. Morphotropic phase boundary is observed in the composition range 0.10<x<0.30, where phase coexistence is observed and composition dependence of room temperature permittivity shows a peak. High temperature dielectric measurement for the composition with x=0.20 exhibits diffuse phase transition having peak temperature around ~ 396 K at 10 kHz. The diffuseness parameter ({\gamma}) was obtained to be 1.68 for composition with x=0.20.

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